Peco Insulfrog Nscale Turnout & Derailments

[Herc Driver]

Those are some great ideas Russ...and I'm going to check each one. Process of elimination since there doesn't seem to be an apparent reason. I find it odd that all 12 of my Peco turnouts seem to do this, not just one. It's such a slight upward movement of the cars and engines, but just enough to allow a wheel to derail. I've noticed that plastic wheels seem to be more prone to this than metal wheel sets, and light cars rather than heavier cars. But the engine problem seems to be limited to three and four axle engines. The lead-in tracks to the turnouts are all straight on the layout, there's no curved track adjoining the turnout, so there should be no shifting of wheels or trucks as they enter the turnout.

I'll keep checking and try to figure this one out.